File igwn-auth-utils-mr73-utznow.patch of Package python-igwn-auth-utils

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File igwn-auth-utils-mr73-utznow.patch of Package python-igwn-auth-utils

From 3d716d0faad554fb9f50fc424b8b037c7427ebfa Mon Sep 17 00:00:00 2001
From: "duncan.macleod" <duncan.macleod@ligo.org>
Date: Wed, 18 Oct 2023 16:45:06 +0100
Subject: [PATCH] x509: replace usage of datetime.utcnow()

`utcnow()` is deprecated in favour of `now(UTC)`.
---
 igwn_auth_utils/tests/test_x509.py | 12 ++++++------
 igwn_auth_utils/x509.py            | 11 +++++++++--
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/igwn_auth_utils/tests/test_x509.py b/igwn_auth_utils/tests/test_x509.py
index 6fd2b8f..cad47a7 100644
--- a/igwn_auth_utils/tests/test_x509.py
+++ b/igwn_auth_utils/tests/test_x509.py
@@ -7,11 +7,8 @@
 
 __author__ = "Duncan Macleod <duncan.macleod@ligo.org>"
 
+import datetime
 import os
-from datetime import (
-    datetime,
-    timedelta,
-)
 from pathlib import Path
 from unittest import mock
 
@@ -36,14 +33,17 @@ def x509cert(private_key, public_key):
     name = x509.Name([
         x509.NameAttribute(NameOID.COMMON_NAME, "test"),
     ])
-    now = datetime.utcnow()
+    try:
+        now = datetime.datetime.now(datetime.UTC)
+    except AttributeError:  # python < 3.11
+        now = datetime.datetime.utcnow()
     return x509.CertificateBuilder(
         issuer_name=name,
         subject_name=name,
         public_key=public_key,
         serial_number=1000,
         not_valid_before=now,
-        not_valid_after=now + timedelta(seconds=86400),
+        not_valid_after=now + datetime.timedelta(seconds=86400),
     ).sign(private_key, hashes.SHA256(), backend=default_backend())
 
 
diff --git a/igwn_auth_utils/x509.py b/igwn_auth_utils/x509.py
index d5c6a90..6292fff 100644
--- a/igwn_auth_utils/x509.py
+++ b/igwn_auth_utils/x509.py
@@ -2,8 +2,8 @@
 # Copyright 2021 Cardiff University
 # Distributed under the terms of the BSD-3-Clause license
 
+import datetime
 import os
-from datetime import datetime
 from pathlib import Path
 
 from cryptography.x509 import (
@@ -95,7 +95,14 @@ def is_valid_certificate(cert, timeleft=600):
 def _timeleft(cert):
     """Returns the time remaining (in seconds) for a ``cert``
     """
-    return (cert.not_valid_after - datetime.utcnow()).total_seconds()
+    expiry = cert.not_valid_after
+    try:
+        now = datetime.datetime.now(datetime.UTC)
+    except AttributeError:  # python < 3.11
+        now = datetime.datetime.utcnow()
+    else:
+        expiry = expiry.astimezone(datetime.UTC)
+    return (expiry - now).total_seconds()
 
 
 def _default_cert_path(prefix="x509up_"):
-- 
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File igwn-auth-utils-mr73-utznow.patch of Package python-igwn-auth-utils

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